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87083747133 = 3971019293677
BaseRepresentation
bin101000100011010011…
…0001000011100111101
322022210000102201020220
41101012212020130331
52411321414402013
6104001122531553
76202005431415
oct1210646103475
9268700381226
1087083747133
1133a28561159
1214a64206bb9
13829a8b0876
144301895645
1523ea32bb23
hex144698873d

87083747133 has 16 divisors (see below), whose sum is σ = 117424211520. Its totient is φ = 57400736256.

The previous prime is 87083747131. The next prime is 87083747183. The reversal of 87083747133 is 33174738078.

It is a happy number.

It is not a de Polignac number, because 87083747133 - 21 = 87083747131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87083747131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149691 + ... + 443367.

It is an arithmetic number, because the mean of its divisors is an integer number (7339013220).

Almost surely, 287083747133 is an apocalyptic number.

It is an amenable number.

87083747133 is a deficient number, since it is larger than the sum of its proper divisors (30340464387).

87083747133 is a wasteful number, since it uses less digits than its factorization.

87083747133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294796.

The product of its (nonzero) digits is 2370816, while the sum is 51.

The spelling of 87083747133 in words is "eighty-seven billion, eighty-three million, seven hundred forty-seven thousand, one hundred thirty-three".

Divisors: 1 3 97 291 1019 3057 98843 293677 296529 881031 28486669 85460007 299256863 897770589 29027915711 87083747133